# "爱奇艺：https://www.iqiyi.com/"

# def msg():
#     print("爱奇艺：https://www.iqiyi.com/")
# msg()
# msg()
# msg()



# 函数参数
def sum(a=0,b=0):
    c = a + b
    return c
print(sum(101,201))
print(sum())



























